Method For Producing High Quality Tissue Paper
In the papermaking process, the main part is divided into the paper feeding part and the papermaking part. The paper feeding part includes pulp, refining, mixing, sizing, etc., and the papermaking part includes forming, pressing, drying, calendering, and winding. How to control the key process parameters of each step in these processes directly affects the quality of the base paper produced.
Tissue Paper Making Line
1.Pulping. The main process parameters to be controlled in the pulping process are the pulp concentration, time and pulping concentration.
2.Refining. The main process parameters to be controlled during the refining process are slurry throughput, refining power and refining concentration.
3.Mixing. At present, the high-speed tissue paper machine’s process flow is real-time pulping. Generally, the upper pulp and the lower pulp are divided. The main process parameter to be controlled in the pulping process is the flow of each pulping line.
4.Sizing. The main process parameters to be controlled in the sizing process are sizing concentration and sizing flow.
5.Forming. After the parameters such as the opening degree of the quantitative valve, the sizing concentration, and the lip opening of the headbox are determined, the main process parameters to be controlled by the forming section are only the pulp network speed ratio.
6.Squeezing. The main process parameters to be controlled during the pressing process are the pressure of the pressing roller and the drying cylinder, and the load distribution of the three driving points of the drying cylinder motor, the pressing roller motor, and the forming roller motor.
7.Drying. The drying system includes the steam system of the dryer and the hot air system of the air hood. The process parameters are the steam pressure into the cylinder, the steam flow through the dryer, and the hot air speed and hot air temperature.
8.Reeling. The main process parameter to be controlled in the coiling process is the wrinkle rate. The control of the wrinkle rate is mainly achieved by changing the speed difference.
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